A kind of anti-corrosion method of reinforced concrete with nano silicon dioxide

Abstract

The invention discloses a method for anticorrosion of reinforced concrete by using nano silicon dioxide. The two components of silicon are mixed according to the ratio of 1:1 and placed for 2 hours, and then evenly coated on the concrete surface to make the nano-material film; 3) After more than 6 hours, brush the nano-material again to increase the thickness of the nano-material film. Use nano-silica to protect the surface of ordinary concrete, high-stress concrete, and concrete with special additives; at room temperature, a layer of transparent or colored dense protective film with a thickness of 20-30 microns is formed on the concrete surface to meet the long-term anti-carbonation of concrete, Anti-corrosion, anti-chloride ion penetration, anti-biological erosion, anti-shedding and peeling and other requirements; the protective coating has the characteristics of high wear resistance, high corrosion resistance and easy cleaning.

Description

technical field [0001] The invention relates to a method for anticorrosion of reinforced concrete, in particular to a method for anticorrosion of reinforced concrete by using nano silicon dioxide. Background technique [0002] When the concentration of sulfate in the environment is high, it will cause physical and chemical corrosion of concrete, and its strength and durability will be significantly reduced, which will endanger the project. At present, in areas with high sulfate concentration, such as: tunnel gypsum surrounding rock sections, anti-sulfate cement or adding concrete anti-sulfate corrosion preservatives are often used to prevent concrete from being corroded by sulfate. This method can reduce its chemical corrosion. , but it cannot solve the physical corrosion of concrete in areas with high sulfate concentrations. At present, there are still some methods of using concrete hydrophobic agent, concrete sealant and other methods to protect the sulfate corrosion of c...

AI Technical Summary

Problems solved by technology

[0002] When the concentration of sulfate in the environment is high, it will cause physical and chemical corrosion of concrete, and its strength and durability will be significantly reduced, which will endanger engineering.

At present, in areas with high sulfate concentration, such as: tunnel gypsum surrounding rock sections, anti-sulfate cement or adding concrete anti-sulfate corrosion preservatives are often used to prevent concrete from being corroded by sulfate. This method can reduce its chemical corrosion. , but it cannot solve the physical corrosion of concrete in areas with high sulfate concentration

At present, there are still some methods of using concrete hydrophobic agent, concrete sealant and other methods to protect the sulfate corrosion of concrete, but the effect is not good, and the corrosion of sulfate to concrete cannot be avoided. Therefore, a new type of concrete anti-corrosion is needed. corrosion method

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